You work in an international company which is named TXTWIN. And you’re in charge of the company network and use Microsoft BizTalk Server 2006 R2.
You develop three schemas all of which have a property named AccountID. They’re respectively named Account, AccountOrder, and AccountAnswer.
Now you create an orchestration which performs the following steps in sequence, the orchestration contains one Send shape, two Receive shapes, and several other shapes. First, the orchestration receives an incoming document, and the document matches the Account schema, second it maps the incoming document to the AccountOrder schema, and then it sends the AccountOrder message to the MessageBox database, receives messages that match the AccountAnswer schema back from the MessageBox database. At last if the AccountAnswer message indicates any errors, it logs a message to the event log.
You develop a correlation set named CorrelationAccountID and a correlation type. Both of them re on the basis of the AccountID property. Now you have been assigned a task that you must ensure that multiple instances of the orchestration can run simultaneously, besides this, you must make sure that each one can process a unique account ID. In order to assure this, what actions should you do? (choose more than one)

A.
On the Send shape, you should initialize CorrelationAccountID.

B.
On the first Receive shape, you should initialize CorrelationAccountID.

C.
On the second Receive shape, you should initialize CorrelationAccountID.

D.
On the second Receive shape, you should set the Following Correlation property.
Make it be equal to CorrelationAccountID.

E.
On the Send shape, you should set the Following Correlation property.
Make it to be equal to CorrelationAccountID.

Explanation:
BURGOS: mnemo: “multiple instances of the orchestration can run simultaneously” = “Send … initializa” / “Receive … equal”